JP7347176B2 - Computer program for image processing device and terminal device - Google Patents

Description

In this specification, connection information is transmitted from a terminal device to an image processing device by wireless communication according to the Bluetooth (registered trademark) standard, and the image processing device uses the connection information to establish a wireless connection with an access point. Disclose technology.

Non-Patent Document 1 discloses a technique for establishing a Wi-Fi connection between a certain device and an access point according to the DPP (Device Provisioning Protocol) method. This document discloses transmitting the public key of a certain device to the outside using wireless communication according to the Bluetooth standard. In particular, it is disclosed that the public key is transmitted to the outside using extended advertising signals available in version 5 of the Bluetooth standard.

“Device Provisioning Protocol Specification Version 1.1” Wi-Fi Alliance, 2018

This specification provides a technique that improves user convenience in a situation where a wireless connection is established between an image processing device and an access point.

An image processing device disclosed in this specification is a first wireless interface for performing wireless communication according to the Bluetooth standard, and the first wireless interface is capable of transmitting an advertising signal according to the Bluetooth standard. and the advertising signal includes predetermined information for receiving connection information from a terminal device, and the connection information is information for establishing a wireless connection between the image processing device and the access point. When the advertising signal including the first wireless interface, a second wireless interface for performing wireless communication according to the Wi-Fi standard, and the predetermined information is received by a first terminal device, a first request signal receiving unit that receives a first request signal using the predetermined information from the first terminal device; When the first request signal is received from the first request signal receiving unit and the first terminal device, the first request signal is a signal for requesting execution of communication for receiving the first connection information. , a first connection information receiving unit that receives the first connection information from the first terminal device; and a first connection information receiving unit that receives the first connection information from the first terminal device; a first establishing unit that establishes a first wireless connection with a first access point via the second wireless interface using connection information; a related processing execution unit that executes related processing related to image processing after a wireless connection of The related processing execution unit includes communicating target data related to image processing with the first terminal device, and in a state where communication of the target data is being executed with the first terminal device, The wireless communication device may further include a prohibition unit that prohibits execution of a process for establishing a wireless connection with an access point different from the first access point via the second wireless interface.

According to the above configuration, the image processing device communicates with the first access point while communication of target data is in progress between the image processing device and the first terminal device via the first access point. prohibits performing processing to establish a wireless connection with a different access point. Therefore, the image processing device can prevent the first wireless connection with the first access point from being disconnected due to execution of the process. As a result, it is possible to prevent communication of the target data from being hindered, and it is possible to improve convenience for the user (that is, the user of the first terminal device) who desires to communicate the target data.

A computer program for a terminal device is also disclosed herein. The terminal device includes a first wireless interface for performing wireless communication according to the Bluetooth standard, a second wireless interface for performing wireless communication according to the Wi-Fi standard, a display section, and a computer. It may also have the following. The computer program causes the computer to be configured as an advertising signal receiving unit that receives a plurality of advertising signals from a plurality of image processing devices via the following units, that is, the first wireless interface; The advertising signals are transmitted from the advertising signal receiving unit and the plurality of image processing devices to the plurality of image processing devices, including a first advertising signal including predetermined information and a second advertising signal not including the predetermined information. a display control section that causes the display section to display a selection screen including a plurality of pieces of identification information for identifying the plurality of image processing apparatuses when a number of advertising signals are received; Identification information identifying the image processing device that is the source of the first advertising signal is displayed in a first display mode, and identification information that identifies the image processing device that is the source of the second advertising signal is displayed in the first display mode. The display control section displays a second display mode different from the first display mode, and the selection screen selects a specific source of the first advertising signal from among the plurality of pieces of identification information. A request signal transmitter that transmits a request signal to the specific image processing device when specific identification information for identifying the image processing device is selected, the request signal being received from the specific image processing device. The request signal is a signal that uses the predetermined information included in the first advertising signal, and the request signal is a signal for requesting execution of communication for transmitting connection information to the specific image processing device. The connection information is information for establishing a wireless connection between the specific image processing device and the access point. a connection information transmitting unit that transmits the connection information to the specific image processing device when the connection information is transmitted; and a connection information transmitter that transmits the connection information to the specific image processing device; After the wireless connection is established between the device and the access point, target data related to image processing performed by the specific image processing device is transmitted via the second wireless interface and the access point. It may function as a target data communication unit that communicates with the specific image processing device.

According to the above configuration, the terminal device includes identification information that identifies the image processing device that is the source of the first advertising signal including the predetermined information, and identification information that identifies the image processing device that is the source of the second advertising signal that includes the predetermined information. It is possible to display a selection screen in which identification information and identification information are distinguished. That is, on the selection screen, identification information for identifying an image processing apparatus that can be a destination of a request signal using predetermined information, and identification information for identifying an image processing apparatus that cannot be a destination for a request signal using predetermined information. are distinguished. Therefore, the user can appropriately select the former identification information. Therefore, a wireless connection can be established between the specific image processing device and the access point, and communication of target data can be appropriately executed between the terminal device and the specific image processing device. As a result, it is possible to improve convenience for users who wish to communicate target data (ie, users of terminal devices).

A computer program for realizing the above-described image processing device, a computer-readable recording medium that stores the computer program, and a method executed by the above-described image processing device are also new and useful. A computer readable recording medium storing a computer program for the terminal device, the terminal device itself, and a method executed by the terminal device are also new and useful. Further, a system including the above image processing device and the above terminal device is also new and useful.

The configuration of the communication system is shown. FIG. 3 shows a sequence diagram of a process for establishing a wireless connection between a printer and an access point. The sequence diagram of processing after establishing a wireless connection is shown. FIG. 4 shows a sequence diagram of a process for establishing a wireless connection between a printer and another access point. A sequence diagram of a case where a mobile terminal receives advertising signals from a plurality of printers is shown.

(Configuration of communication system 2: Figure 1)
As shown in FIG. 1, the communication system 2 includes multiple printers 10 and 50 and multiple mobile terminals 100 and 150. Each of the printer 50 and the mobile terminal 100 has established a wireless connection (hereinafter referred to as a "Wi-Fi connection") in accordance with the Wi-Fi standard with the access point 200. That is, the printer 50 and the mobile terminal 100 belong to the same wireless network formed by the access point 200. Mobile terminal 150 has established a Wi-Fi connection with access point 250. In the following, a mobile terminal and an access point will be simply referred to as a "terminal" and "AP", respectively.

In this embodiment, first, wireless communication according to the Bluetooth (registered trademark) standard is performed between the printer 10 and the mobile terminal 100, and connection information for establishing a Wi-Fi connection with the AP 200 is transmitted from the terminal 100. It is sent to the printer 10. Thereafter, a Wi-Fi connection is established between the printer 10 and the AP 200.

(Configuration of printers 10 and 50)
Each printer 10, 50 is a peripheral device (for example, a peripheral device of the terminal 100) that can execute a printing function. The model name of the printer 10 is "M1", and the model name of the printer 50 is "M2", which is different from "M1". The printer 10 includes a display section 12, a print execution section 14, a BT (abbreviation for BlueTooth) interface 16, a Wi-Fi interface 18, and a control section 30. In the following, the interface will be referred to as "I/F".

The display unit 12 is a display for displaying various information. The display unit 12 also functions as a touch panel (ie, an operation unit) that receives instructions from the user. The printing execution unit 14 includes a printing mechanism such as an inkjet type or a laser type.

The BTI/F 16 is an I/F for performing wireless communication according to the BT standard. The BT standard is, for example, a wireless communication system based on the IEEE802.15.1 standard and standards corresponding thereto. The BTI/F 16 is an I/F defined in version 5 or later of the BT standard. In versions 5 and later of the BT standard, extended advertising signals (so-called Advertising Extensions) are adopted. The BTI/F 16 can transmit both an extended advertising signal that can be used in versions 5.0 and later of the BT standard, and a non-enhanced normal advertising signal that can be used in versions lower than 5 of the BT standards. The size of data that can be included in an extended advertising signal is larger than the size of data that can be included in a normal advertising signal. For this purpose, the BTI/F 16 can transmit relatively large-sized data (for example, a public key 300 described below) using an extended advertising signal. In the following, the advertising signal will be referred to as an "AD signal."

The Wi-Fi I/F 14 is a wireless interface for performing wireless communication according to the Wi-Fi standard. Wi-Fi standards include, for example, the IEEE (Institute of Electrical and Electronics Engineers, Inc.) 802.11 standard and standards equivalent to it (e.g. 802.11a, 11b, 11g, 11n, 11ac, etc.) This is a wireless communication method for performing wireless communication according to the following. The Wi-Fi I/F 14 particularly supports the DPP (abbreviation for Device Provisioning Protocol) method developed by the Wi-Fi Alliance. The DPP method is a wireless communication method described in the standard document “Device Provisioning Protocol Specification Version 1.1” created by the Wi-Fi Alliance.

The control unit 30 includes a CPU 32 and a memory 34. The CPU 32 executes various processes according to the program 36 stored in the memory 34. The memory 34 is composed of volatile memory, nonvolatile memory, and the like.

The hardware configuration (not shown) of the printer 50 is the same as that of the printer 10. That is, the printer 50 includes a BT I/F defined in version 5 or later of the BT standard, and a Wi-Fi I/F that supports the DPP method.

(Configuration of terminals 100 and 150)
Each terminal 100, 150 is a portable terminal device such as a mobile phone (for example, a smartphone), a PDA, or a tablet PC. The terminal 100 includes a display section 112, a BTI/F 116, a Wi-Fi I/F 118, and a control section 130.

The display unit 112 is a display for displaying various information. The display unit 112 also functions as a touch panel (ie, an operation unit) that receives instructions from the user. BTI/F 116 is similar to BTI/F 16 of printer 10. That is, the BTI/F 116 is an I/F defined in version 5 or later of the BT standard, and can interpret both extended AD signals and normal AD signals. The Wi-Fi I/F 118 is similar to the Wi-Fi I/F 18 of the printer 10. That is, the Wi-Fi I/F 118 supports the DPP method.

The control unit 130 includes a CPU 132 and a memory 134. CPU 132 executes various processes according to programs 136 and 138 stored in memory 134. The memory 134 is composed of volatile memory, nonvolatile memory, etc., and includes an OS (Operating System) program 136 (hereinafter simply referred to as "OS 136") and a print application 138 (hereinafter simply referred to as "application 138"). to remember).

The OS 136 is a program for controlling the basic operations of the terminal 100, and is, for example, iOS (registered trademark), Android (registered trademark), or the like. The application 138 is a program for establishing a Wi-Fi connection between the printer 10 and the AP 200 and for causing the printer 10 to execute printing. For example, the application 138 may be installed on the terminal 100 from a server on the Internet provided by the vendor of the printer 10, or may be installed on the terminal 100 from media shipped with the printer 10.

The hardware configuration (not shown) of mobile terminal 150 is the same as that of mobile terminal 100. That is, the mobile terminal 150 includes a BT I/F defined in version 5 or later of the BT standard, and a Wi-Fi I/F that supports the DPP method.

(Processes executed by each device 10, 50, 100, 150: Figures 2 to 5)
Next, specific processing executed by each device 10 and the like will be described with reference to FIGS. 2 to 5. In the following, when describing the processing that the CPU 132 of the terminal 100 executes according to the OS 136 or the application 138, the description will be made with the OS 136 or the application 138 as the main subject. In FIGS. 2 to 5, communication according to the BT standard and communication according to the Wi-Fi standard between the devices 10 and the like are shown by solid lines and broken lines, respectively.

(Processing for establishing a Wi-Fi connection between the printer 10 and the AP 200: Figure 2)
First, with reference to FIG. 2, a process for establishing a Wi-Fi connection between the printer 10 and the AP 200 using the terminal 100 will be described. At T100, the printer 10 is powered on by the user. In this state, the printer 10 has not established a Wi-Fi connection with the AP 200. In this case, the CPU 32 of the printer 10 instructs the BTI/F 16 to transmit the extended AD signal. As a result, the BTI/F 16 repeatedly transmits the extended AD signal at T102. The extended AD signal includes the model name M1 of the printer 10 and the public key 300 of the printer 10. The public key 300 is information used to transmit an Authentication Request, which is a DPP signal.

At T110, the user performs an operation to start the application 138 of the terminal 100, and at T112, the user performs a Wi-Fi connection operation to establish a Wi-Fi connection between the printer 10 and the AP 200. In this case, at T120, the application 138 supplies the OS 136 with a reception instruction to instruct reception of the AD signal.

Upon acquiring the reception instruction from the application 138 (T120), the OS 136 activates the BTI/F 116, and receives the extended AD signal from the printer 10 via the BTI/F 116 at T122. Then, at T124, the OS 136 supplies the model name M1 and public key 300 included in the extended AD signal to the application 138.

Upon acquiring the model name M1 and public key 300 from the OS 136 (T124), the application 138 displays a connection confirmation screen on the display unit 112 at T130. The connection confirmation screen includes a message asking the user which printer and AP to establish a Wi-Fi connection with, and the acquired model name M1.

At T132, the model name M1 in the connection confirmation screen is selected by the user. In this case, the application 138 supplies the OS 136 with a DPP instruction for instructing execution of wireless communication according to the DPP method at T140. The DPP instruction includes the public key 300 already acquired at T124, that is, the public key 300 received from the printer 10 having the model name M1.

Upon acquiring the DPP instruction from the application 138 (T140), the OS 136 executes DPP-based authentication (hereinafter referred to as "Auth") with the printer 10 at T142. Specifically, the OS 136 first generates a shared key using the public key 300 and the private key of the terminal 100, and generates encrypted data using the shared key. Then, the OS 136 transmits an Auth Request including the encrypted data and the public key of the terminal 100 to the printer 10 via the Wi-Fi I/F 118. The Request is a signal requesting the printer 10 to perform authentication.

When the CPU 32 receives the Request from the terminal 100 via the Wi-Fi I/F 18, it authenticates the encrypted data included in the Request. When the authentication is successful, the CPU 32 transmits an Auth Response indicating success to the terminal 100 via the Wi-Fi I/F 18. Hereinafter, Request and Response will be referred to as "Req" and "Res", respectively.

When the CPU 32 transmits the Auth Res to the terminal 100 (T142), the CPU 32 executes a DPP configuration (hereinafter referred to as "Config") with the terminal 100 in T144. Specifically, the CPU 32 transmits the Config Req to the terminal 100 via the Wi-Fi I/F 18. The Req is a signal requesting the printer 10 to transmit a printer Config Object. The Object is connection information necessary for the printer 10 to establish a Wi-Fi connection with the AP 200, and includes a printer Signed-Connector and the like. Hereinafter, Config Object and Signed-Connector will be referred to as "CO" and "SC", respectively.

Upon receiving the Config Req from the printer 10 via the Wi-Fi I/F 118, the OS 136 generates a printer CO including a printer SC. Next, the OS 136 transmits Config Res including the printer CO to the printer 10 via the Wi-Fi I/F 118.

When the CPU 32 receives the Config Res from the terminal 100 via the Wi-Fi I/F 18 (T144), the CPU 32 stores the printer CO in the memory 34 in T146.

Next, the CPU 32 executes DPP-based Network Access with the AP 200 at T148. Specifically, the CPU 32 first obtains the printer SC included in the stored printer CO at T146. Then, the CPU 32 transmits a DPP Peer Discovery Req including the printer SC to the AP 200 via the Wi-Fi I/F 18. The Req is a signal requesting the AP 200 to perform authentication. Hereinafter, DPP Peer Discovery will be simply referred to as "Discovery".

Upon receiving the Discovery Req from the printer 10, the AP 200 executes authentication using the printer SC included in the request. When the authentication is successful, the AP 200 generates a connection key and transmits a Discovery Res including the AP SC to the printer 10 .

Upon receiving the Discovery Res from the AP 200 via the Wi-Fi I/F 18, the CPU 32 executes authentication using the AP SC included in the Res. If the authentication is successful, the CPU 32 generates a connection key. The connection key generated here is the same as the connection key generated by the AP 200. As a result, the connection key is shared between the printer 10 and the AP 200.

The CPU 32 uses the connection key to perform 4-way-handshake communication with the AP 200 via the Wi-Fi I/F 18. As a result, a Wi-Fi connection is established between the printer 10 and the AP 200.

After establishing a Wi-Fi connection with the AP 200 (T148), the CPU 32 instructs the BTI/F 16 to transmit an extended AD signal. As a result, the BTI/F 16 repeatedly transmits the extended AD signal at T150. The extended AD signal is the same signal as the extended AD signal transmitted at T102.

(Processing continued from Figure 2: Figure 3)
Next, with reference to FIG. 3, the process continued from FIG. 2 will be described. In the process of FIG. 2, when a Wi-Fi connection is established between the printer 10 and the AP 200 (T148), each printer 10, 50 and the terminal 100 become part of the same wireless network formed by the AP 200. .

At T210, the user performs a file selection operation to select an image file representing the image to be printed. The image file selected here may be a file stored in the memory 134 of the terminal 100, or may be a file obtained via the Internet. In this case, at T220, the application 138 supplies the OS 136 with a search instruction to search for the printers 10 and 50.

When the OS 136 obtains the search instruction from the application 138 (T220), the OS 136 transmits a search signal to the AP 200 by broadcast in T222 using the Wi-Fi connection (ie, via the Wi-Fi I/F 118). As a result, a search signal is received by each printer 10,50.

When the CPU 32 of the printer 10 receives the search signal from the terminal 100 using the Wi-Fi connection (that is, via the Wi-Fi I/F 18) (T222), the CPU 32 of the printer 10 uses the Wi-Fi connection to A response signal including the model name M1 of the printer 10 and the IP address IP1 of the printer 10 is transmitted to the terminal 100. Similarly, in T224B, the printer 50 transmits a response signal including the model name M2 of the printer 50 and the IP address IP2 of the printer 50 to the terminal 100 using the Wi-Fi connection.

When the OS 136 receives each response signal from each printer 10, 50 using the Wi-Fi connection (T224A, T224B), in T226, the OS 136 receives each response signal (i.e., model name M1 and IP address). IP1 set, and a set of model name M2 and IP address IP2) are supplied to the application 138.

After acquiring each piece of information from the OS 136 (T226), the application 138 displays a printer selection screen on the display unit 12 at T230. The printer selection screen includes a message prompting the user to select a printer for printing, and model names M1 and M2 included in the information acquired at T226.

At T232, the model name M1 of the printer 10 is selected by the user on the printer selection screen. In this case, the application 138 supplies the OS 136 with a print instruction to instruct the transmission of the image file at T240. The print instruction includes the IP address IP1 corresponding to the model name M1 selected at T232 among the pieces of information already acquired at T226. The print instruction further includes the file name of the image file selected at T210.

When the OS 136 acquires the print instruction from the application 138 (T240), the OS 136 uses the Wi-Fi connection to send the message including the IP address IP1 as the destination and the print data corresponding to the selected image file in T242. A print instruction is sent to the printer 10.

When the CPU 32 starts receiving a print instruction from the terminal 100 using the Wi-Fi connection (T242), the CPU 32 instructs the BTI/F 16 to transmit a normal AD signal at T250. As a result, at T250, the BTI/F 16 changes from the state of transmitting the extended AD signal (T150 in FIG. 2) to the state of transmitting the normal AD signal. The normal AD signal includes the model name M1 of the printer 10 and status information 310 indicating that printing is in progress. Typically, the AD signal does not include the public key 300.

When the CPU 32 starts receiving the print instruction from the terminal 100 (T242), the CPU 32 further supplies the print data included in the print instruction to the print execution unit 14 in T260, and prints the image represented by the print data. part 14 to execute it. Here, it takes a certain amount of time to receive all of the print data. Therefore, printing is started when part of the print data is received (T260), and then the remaining data of the print data is received and the remaining data is supplied to the print execution unit 14. Then, printing is completed (T262).

As described above, when the printer 10 starts receiving print data (T242), it transmits a normal AD signal that does not include the public key 300 instead of the extended AD signal that includes the public key 300 (T250). Therefore, while the printer 10 is receiving print data, an event in which a terminal different from the terminal 100 receives the extended AD signal does not occur. That is, an event in which the different terminal transmits an Auth Req including the public key 300 to the printer 10 does not occur. If such an event occurs, the printer 10 will disconnect the Wi-Fi connection with the AP 200 even though it is currently receiving print data, and establish a Wi-Fi connection with an AP different from the AP 200. Processing may be performed to establish the connection. In this embodiment, the printer 10 establishes a Wi-Fi connection with an AP different from the AP 200 by transmitting a normal AD signal instead of an extended AD signal while receiving print data. Prohibits the execution of processing for this purpose. Therefore, it is possible to prevent the Wi-Fi connection from being disconnected from the AP 200 while receiving print data. As a result, communication of print data can be prevented from being hindered, and convenience for users who wish to communicate print data (ie, execute printing) can be improved.

Further, the printer 10 transmits a normal AD signal including status information 310 (T250). Therefore, when a terminal different from the terminal 100 receives the normal AD signal from the printer 10 while the printer 10 is receiving print data, it can acquire the status information 310 included in the normal AD signal. . To this end, the different terminal can display a screen indicating that the printer 10 is performing printing, for example, according to the status information 310. By looking at the screen, the user of the different terminal knows that the Wi-Fi connection cannot be established between the printer 10 and the AP because the printer 10 is currently printing. be able to.

When all of the print data has been received and printing is completed (T262), the CPU 32 instructs the BTI/F 16 to transmit an extended AD signal in T270. As a result, the BTI/F 16 changes from the normal AD signal transmitting state (T250) to the extended AD signal transmitting state at T270. The extended AD signal is the same signal as the extended AD signal transmitted at T102 in FIG. In this way, the printer 10 transmits the extended AD signal again when all the print data has been received, so it is not necessary to execute the process for establishing a Wi-Fi connection with an AP different from the AP 200. I can do it.

(Processing continued from Figure 3: Figure 4)
Next, with reference to FIG. 4, the process continued from FIG. 3 will be described. In this state, the printer 10 repeatedly transmits the extended AD signal at T302 (see T270 in FIG. 3). Here, using the terminal 150 that has established a Wi-Fi connection with the AP 250, the connection between the printer 10 and the AP 250 will be A process for changing the state to where a Wi-Fi connection is established will be explained.

T310 to T342 are similar to T110 to T142 in FIG. 2, except that the terminal 150 is used instead of the terminal 100. When the CPU 32 of the printer 10 receives an Auth Req from the terminal 150 via the Wi-Fi I/F 18 and sends an Auth Res to the terminal 150 (T342), the CPU 32 of the printer 10 issues a disconnection request via the Wi-Fi I/F 18 in T343. is transmitted to the AP 200. The disconnection request is a signal for requesting the AP 200 to disconnect the Wi-Fi connection. As a result, the Wi-Fi connection between the printer 10 and the AP 200 is disconnected.

Next, the CPU 32 executes Config with the terminal 150 via the Wi-Fi I/F 18. The Config is the same as T144 in FIG. 2, except that the terminal 150 is used and the printer CO required to establish a Wi-Fi connection with the AP 250 is sent to the printer 10. It is.

T346 and T348 are similar to T146 and T148 in FIG. 2, except that the printer CO of T344 is used and the AP 250 is used. As a result, a Wi-Fi connection is established between the printer 10 and the AP 250. T350 is similar to T150 in FIG. In this way, when the extended AD signal is received by the terminal 150 different from the terminal 100 (T322) while the Wi-Fi connection with the AP 200 is established, the printer 10 connects the printer 10 to the AP 250 different from the AP 200. Wi-Fi connection can be properly established.

(A case where the terminal 100 receives AD signals from multiple printers 10 and 50: Figure 5)
Next, a case different from that in FIG. 2 will be explained with reference to FIG. 5. In the case of FIG. 2, the terminal 100 receives the extended AD signal from only one printer 10 (T122) and displays a connection selection screen that includes only the model name M1 of the printer 10 (T130). In contrast, in the case of FIG. 5, the terminal 100 receives AD signals from each of the plurality of printers 10 and 50. The initial state in FIG. 5 is similar to the initial state in FIG. 2 (ie, the state in which the printer 10 has not established a Wi-Fi connection).

Printer 50 is currently printing. To this end, the printer 50 repeatedly transmits the normal AD signal at T400 (see T250 in FIG. 3). The normal AD signal includes the model name M2 of the printer 50 and status information 330 indicating that printing is in progress.

T401 to T420 are similar to T100 to T120 in FIG. Upon acquiring the reception instruction from the application 138 (T420), the OS 136 receives the extended AD signal from the printer 10 at T422, and receives the normal AD signal from the printer 50 at T423. Then, in T424, the OS 136 transfers each information included in the received extended AD signal and normal AD signal (i.e., a set of model name M1 and public key 300, and a set of model name M2 and status information 330) to the application. 138.

After acquiring each piece of information from the OS 136 (T424), the application 138 displays a connection confirmation screen on the display unit 112 at T430. The connection confirmation screen includes each model name M1 and M2 included in each piece of acquired information. Here, the application 138 displays the model name M1, which is a set with the public key 300, in a selectable manner, and displays the model name M2, which is a set with the status information 330, in a non-selectable manner. In this embodiment, the selectable aspect is that it is displayed in black. In this embodiment, the non-selectable aspect is displayed in so-called gray-out. However, in a modified example, the model name M2 may be displayed in a selectable manner. In this case, the model name M2 may be displayed in a different color from the model name M1, or may be displayed in a smaller size than the model name M1. Generally speaking, it is sufficient that the model name M1 and the model name M2 have different display modes.

Note that if the printer 50 is not executing printing, the OS 136 also receives the extended AD signal from the printer 50. In this case, the application 138 displays both the model name M1 and the model name M2 in a selectable manner. Further, if the printer 10 is executing printing, the OS 136 also receives the normal AD signal from the printer 10. In this case, the application 138 displays the model name M1 and the model name M2 in such a manner that neither the model name M1 nor the model name M2 can be selected.

The application 138 further displays a connection selection screen including the character string "Printing in progress" indicated by the status information 330 on the right side of the model name M2 and adjacent to the model name M2. This allows the user to know that the printer 50 having the model name M2 is currently printing. In addition, in a modified example, the character string "Printing in progress" may be placed on the left side of the model name M2, or may be placed directly below the model name M2. Further, instead of the character string "printing in progress", a mark indicating that printing is in progress may be used. Generally speaking, the status information 330 may be displayed in association with the model name M2.

By looking at the connection selection screen, the user can easily distinguish between the model name M1 displayed in a selectable manner and the model name M2 displayed in a non-selectable manner. This allows the user to know that a Wi-Fi connection can be established between the printer 10 having the model name M1 and the AP. Therefore, the user can appropriately select the model name M1 at T432. The subsequent processing is similar to T140 to T150 in FIG. 2 and T220 to T270 in FIG. For this purpose, a Wi-Fi connection can be established between the printer 10 and the AP 200 (T148 in FIG. 2 cited in FIG. 5), and communication of print data can be properly performed between the terminal 100 and the printer 10. It can be executed (T242 in FIG. 3). As a result, convenience for users who wish to communicate print data (ie, users of terminal 100) can be improved.

(correspondence)
The printer 10, the terminal 100, and the terminal 150 are examples of an "image processing device," a "first terminal device," and a "second terminal device," respectively. AP200 and AP250 are examples of a "first access point" and a "second access point", respectively. The BTI/F 16 and the Wi-Fi I/F 18 are examples of a "first wireless interface" and a "second wireless interface" of the "image processing device," respectively. Public key 300 and printer CO are examples of "predetermined information" and "connection information", respectively. In FIG. 2, T142 Auth Req, T144 printer CO, and T148 Wi-Fi connection are examples of "first request signal,""first connection information," and "first wireless connection," respectively. be. The print data at T242 in FIG. 3 is an example of "target data." Receiving a print instruction at T242 in FIG. 3 and executing printing at T260 are examples of "related processing." The process of T250 is an example of "processing for establishing a wireless connection with a different access point." In FIG. 4, T342 Auth Req, T344 printer CO, and T348 Wi-Fi connection are examples of "second request signal,""second connection information," and "second wireless connection," respectively. be.

The correspondence relationship regarding "image processing device" is as follows. The process of T142, the process of T144, and the process of T148 in FIG. 2 are respectively executed by the "first request signal receiving section", "first connection information receiving section", and "first establishment section". This is an example. The process at T242, the process at T250, and the process at T270 in FIG. 3 are examples of processes executed by the "related process execution unit," the "prohibition unit," and the "interface control unit," respectively. The processing of T342, the processing of T343, the processing of T344, and the processing of T348 in FIG. This is an example of the process executed by the "establishment unit" of

Terminal 100 is an example of a "terminal device." The BTI/F 116 and the Wi-Fi I/F 118 are examples of a "first wireless interface" and a "second wireless interface" of the "terminal device," respectively. The printers 10 and 50 are an example of "a plurality of image processing devices." The extended AD signal T422 and the normal AD signal T423 in FIG. 5 are examples of the "first advertising signal" and the "second advertising signal", respectively. The plurality of model names M1 and M2 and the connection selection screen of T430 in FIG. 5 are examples of "a plurality of identification information" and a "selection screen", respectively. The selectable mode and the non-selectable mode are examples of a "first display mode" and a "second display mode", respectively. Model name M1 and printer 10 are examples of "specific identification information" and "specific image processing device", respectively. T142 Auth Req, T144 printer CO, and T148 Wi-Fi connection cited in FIG. 5 are examples of a "request signal," "connection information," and "wireless connection," respectively.

The correspondence relationship regarding "terminal device" is as follows. The processing at T422 and T423 resulting from T420 in FIG. 5 is an example of the processing executed by the "advertising signal receiving section." The process at T430 is an example of the process executed by the "display control unit". The process at T142 caused by T140 in FIG. 2 cited in FIG. 5 is an example of the process executed by the "request signal transmitter". The process at T144 caused by T140 in FIG. 2 cited in FIG. 5 is an example of the process executed by the "connection information transmitter". The process at T242 resulting from T240 in FIG. 3 is an example of the process executed by the "target data communication unit."

Although specific examples of the present invention have been described in detail above, these are merely illustrative and do not limit the scope of the claims. The techniques described in the claims include various modifications and changes to the specific examples illustrated above. Modifications of the above embodiment are listed below.

(Modification 1) The terminal 100 does not need to support the DPP method, and may establish a Wi-Fi connection with the AP 200 according to the method of the normal Wi-Fi standard. In this case, the terminal 100 has already stored the SSID and password (hereinafter referred to as "AP connection information") of the wireless network formed by the AP 200. Further, the printer 10 may be able to operate as a group owner (hereinafter referred to as "G/O") of the WFD (abbreviation for Wi-Fi Direct (registered trademark)) system. In this case, at T102 in FIG. 2, the printer 10 transmits an extended AD signal that includes the SSID and password (hereinafter referred to as "WFD connection information") of the wireless network in which the printer 10 operates as a G/O. good. The terminal 100 can acquire WFD connection information by receiving the extended AD signal. In this case, the terminal 100 sends a Probe request including the SSID included in the WFD connection information to the printer 10 via the Wi-Fi I/F 118, and further uses the WFD connection information to connect the Wi-Fi I/F 118. A WFD wireless connection can be established with the printer 10 via the printer 10. Thereafter, the terminal 100 uses the WFD wireless connection to transmit the AP connection information to the printer 10 via the Wi-Fi I/F 118. For this purpose, the printer 10 can establish a Wi-Fi connection with the AP 200 using the AP connection information. In this modification, the WFD connection information, Probe request, and AP connection information are "predetermined information," "first request signal (or request signal)," and "first connection information (or connection information)," respectively. This is an example.

(Modification 2) Similar to the above modification 1, the terminal 100 may establish a Wi-Fi connection with the AP 200 according to the method of the normal Wi-Fi standard, and may have stored the AP connection information. Then, at T102 in FIG. 2, the printer 10 may transmit an extended AD signal that includes pairing information (for example, a PIN code) for performing BT standard pairing instead of the public key 300. Terminal 100 can acquire pairing information by receiving the extended AD signal. In this case, the terminal 100 can establish an L2CAP Link with the printer 10 by transmitting a pairing request signal including pairing information to the printer 10 via the BT I/F 116. Thereafter, the terminal 100 uses the L2CAP Link to transmit the AP connection information to the printer 10 via the BTI/F 116. For this purpose, the printer 10 can establish a Wi-Fi connection with the AP 200 using the AP connection information. In this modification, pairing information and AP connection information are examples of "predetermined information" and "connection information", respectively.

(Modification 3) At T250 in FIG. 3, the printer 10 may execute any of the following processes from Modification 3-1 to Modification 3-4 instead of transmitting the normal AD signal. .

(Modification 3-1) The printer 10 may continue to transmit the extended AD signal even after receiving the print instruction at T242. When the printer 10 receives an Auth Request from a terminal 150 different from the terminal 100, the printer 10 may execute Config with the terminal 150 and receive the printer CO from the terminal 150. However, the printer 10 does not perform Network Access with the AP 250 until the print data reception is completed. For this reason, the printer 10 does not have to disconnect from the Wi-Fi connection with the AP 200. In this modification, Network Access with the AP 250 is an example of "processing for establishing a wireless connection with a different access point." Further, prohibiting the execution of Network Access is an example of a process executed by the "prohibition unit".

(Modification 3-2) The printer 10 may continue to transmit the extended AD signal even after receiving the print instruction at T242. Further, when the printer 10 receives an Auth Req from a terminal 150 different from the terminal 100, the printer 10 does not need to transmit an Auth Res to the terminal 150. In this case, the printer 10 does not receive the printer CO from the terminal 150 and does not execute Network Access with the AP 250. For this reason, the printer 10 does not have to disconnect from the Wi-Fi connection with the AP 200. In this modification, the process from sending Auth Res to establishing a Wi-Fi connection is an example of "processing for establishing a wireless connection with a different access point." Further, prohibiting the transmission of Auth Res is an example of a process executed by the "prohibition unit".

(Modification 3-3) When the printer 10 receives the print instruction at T242, the printer 10 may transmit an extended AD signal that does not include the public key 300 instead of the extended AD signal that includes the public key 300. In this case, the printer 10 does not receive an Auth Request from a terminal 150 different from the terminal 100, and does not perform Network Access with the AP 250. For this reason, the printer 10 does not have to disconnect from the Wi-Fi connection with the AP 200. In this modification, the process from receiving an Auth Request to establishing a Wi-Fi connection is an example of "processing for establishing a wireless connection with a different access point." Further, controlling the B/TI/F 16 to transmit an extended AD signal that does not include the public key 300 is an example of processing executed by the "prohibition unit".

(Modification 3-4) The printer 10 may cut off the power to the BTI/F 16 when receiving the print instruction at T242. In this case, the BTI/F 16 enters a state in which it does not transmit either the extended AD signal or the normal AD signal. As a result, the printer 10 does not receive an Auth Request from a terminal 150 different from the terminal 100, and does not perform Network Access with the AP 250. For this reason, the printer 10 does not have to disconnect from the Wi-Fi connection with the AP 200. In this modification, the process from receiving an Auth Request to establishing a Wi-Fi connection is an example of "processing for establishing a wireless connection with a different access point." Cutting off power to the BTI/F 16 is an example of a process executed by the "prohibition unit".

(Modification 4) When establishing a Wi-Fi connection at T148 in FIG. 2, the printer 10 may transmit a normal AD signal at T150 instead of transmitting the extended AD signal. According to this modification as well, the printer 10 does not need to perform processing for establishing a Wi-Fi connection with an AP different from the AP 200 while printing is in progress. In this modification, transmitting the normal AD signal at T150 is an example of the process executed by the "prohibition unit".

(Variation 5) The printer 10 may transmit a normal AD signal that does not include the status information 330 at T250 in FIG. Generally speaking, a "normal advertising signal" may or may not include status information. Furthermore, in this modification, the application 138 does not need to display the character string "Printing in progress" in association with the model name M2 at T430 in FIG. Generally speaking, on the "selection screen", the identification information displayed in the second display mode may or may not be displayed in association with the status information.

(Variation 6) The printer 10 does not have to use the completion of printing at T262 in FIG. 3 as a trigger to start transmitting the extended AD signal instead of the normal AD signal. For example, the printer 10 may be triggered by receiving a termination instruction from the terminal 100 to start transmitting the extended AD signal instead of the normal AD signal. In this modification, the "interface control section" can be omitted. Note that even if the printer 10 does not receive the termination instruction from the terminal 100, the printer 10 may start transmitting the extended AD signal instead of the normal AD signal when a predetermined time has elapsed after printing is completed.

(Modification 7) The printer 10 may disconnect the Wi-Fi connection with the AP 200 using the completion of printing at T262 in FIG. 3 as a trigger. In this case, the printer 10 is in a state where it has not established a Wi-Fi connection with any AP, and transmits the extended AD signal. In this modification, the "second request signal receiving section," the "disconnecting section," the "second connection information receiving section," and the "second establishing section" can be omitted.

(Modification 8) Instead of the printer 10, a scanner including a scan execution unit may be used. In this case, the terminal 100 transmits a scan instruction to the scanner instead of a print instruction via the AP 200 at T240 and T242 in FIG. Then, at T260, the scanner causes the scan execution unit to execute the scan, and then transmits the scan data to the terminal 100 via the AP 200. In this modification, scanning, scan data, and reception of scan instructions to transmission of scan data are examples of "image processing," "target data," and "related processing," respectively. Furthermore, in this modification, the "print execution section" can be omitted. Further, the "image processing device" does not need to be the printer 10 or the scanner, and may be, for example, a FAX device, a multi-function device, or the like.

(Modification 9) In each of the above embodiments, the CPU 32 of the printer 10 executes the program 36 (that is, software), and the CPU 132 of the terminal 100 executes the programs 136, 138, so that Each process is realized. Alternatively, any of the processes may be realized by hardware such as a logic circuit.

2: Communication system, 10: Printer, 12: Display unit, 14: Print execution unit, 16: BTI/F, 18: Wi-Fi I/F, 30: Control unit, 32: CPU, 34: Memory, 36: Program , 50: Printer, 100: Mobile terminal, 112: Display section, 116: BT I/F, 118: Wi-Fi I/F, 130: Control section, 132: CPU, 134: Memory, 136: OS program, 138: Print Application, 150: Mobile terminal, 200, 250: AP

Claims (9)

An image processing device,
A first wireless interface for performing wireless communication according to the Bluetooth standard,
The first wireless interface is capable of transmitting an advertising signal of the Bluetooth standard,
The advertising signal includes predetermined information for receiving connection information from a terminal device,
The connection information is information for establishing a wireless connection between the image processing device and the access point, and the first wireless interface;
a second wireless interface for performing wireless communication in accordance with the Wi-Fi standard;
a first request signal reception that receives a first request signal using the predetermined information from the first terminal device when the advertising signal including the predetermined information is received by the first terminal device; the first request signal receiving unit, wherein the first request signal is a signal for requesting execution of communication for receiving first connection information from the first terminal device; and,
a first connection information receiving unit that receives the first connection information from the first terminal device when the first request signal is received from the first terminal device;
When the first connection information is received from the first terminal device, the first connection information is used to establish a first connection with the first access point via the second wireless interface. a first establishing unit for establishing a wireless connection;
A related processing execution unit that executes related processing related to image processing after the first wireless connection with the first access point is established, the related processing being performed on the first access point and the related processing. The related processing execution unit includes communicating target data related to the image processing with the first terminal device via the second wireless interface;
establishing a wireless connection with an access point different from the first access point via the second wireless interface while communication of the target data is in progress with the first terminal device; a prohibition section that prohibits execution of the process;
An image processing device comprising: The prohibition unit executes the process for establishing the wireless connection with the different access point by controlling the first wireless interface not to transmit the advertising signal including the predetermined information. The image processing device according to claim 1, wherein the image processing device prohibits. The first wireless interface is capable of transmitting both an extended advertising signal available in version 5 or later of the Bluetooth standard, and a non-enhanced normal advertising signal available in versions lower than version 5 of the Bluetooth standard. and
The advertising signal including the predetermined information is the extended advertising signal including the predetermined information,
The prohibition unit controls communication with the different access point by controlling the first wireless interface to transmit the normal advertising signal that does not include the predetermined information instead of the extended advertising signal that includes the predetermined information. The image processing device according to claim 2, wherein execution of the process for establishing the wireless connection is prohibited. The image processing apparatus according to claim 3, wherein the normal advertising signal includes status information indicating that the related processing is being executed. The image processing device further includes:
an interface control unit that controls the first wireless interface to transmit the extended advertising signal that includes the predetermined information instead of the normal advertising signal that does not include the predetermined information when communication of the target data is completed; The image processing device according to claim 3 or 4, comprising: The image processing device further includes:
When the advertising signal including the predetermined information is received by a second terminal device different from the first terminal device in a state where the first wireless connection with the first access point is established. a second request signal receiving unit that receives a second request signal using the predetermined information from the second terminal device, the second request signal receiving the second request signal from the second terminal device; the second request signal receiving unit, which is a signal for requesting execution of communication for receiving second connection information from;
a disconnection unit that disconnects the first wireless connection with the first access point when the second request signal is received from the second terminal device;
a second connection information receiving unit that receives the second connection information from the second terminal device when the second request signal is received from the second terminal device;
When the second connection information is received from the second terminal device, the second connection information is used to connect the access point different from the first access point via the second wireless interface. a second establishment unit that establishes a second wireless connection with a second access point;
The image processing device according to any one of claims 1 to 5, comprising: The image processing device further includes:
Equipped with a print execution unit,
The image processing is printing,
The target data is print data representing an image to be printed,
Claims 1 to 6, wherein the related processing includes receiving the print data from the first terminal device, and causing the print execution unit to print the image represented by the print data. The image processing device according to any one of the above. A computer program for a terminal device,
The terminal device is
a first wireless interface for performing wireless communication according to the Bluetooth standard;
a second wireless interface for performing wireless communication in accordance with the Wi-Fi standard;
A display section;
comprising a computer;
The computer program causes the computer to run the following parts:
An advertising signal receiving unit that receives a plurality of advertising signals from a plurality of image processing devices via the first wireless interface, the plurality of advertising signals being a first advertising signal including predetermined information. and a second advertising signal that does not include the predetermined information.
a display control section that causes the display section to display a selection screen including a plurality of pieces of identification information for identifying the plurality of image processing apparatuses when the plurality of advertising signals are received from the plurality of image processing apparatuses; In the selection screen, identification information identifying the image processing device that is the transmission source of the first advertising signal is displayed in a first display mode, and identification information that identifies the image processing device that is the transmission source of the second advertising signal is displayed in a first display mode, and the identification information that identifies the image processing device that is the transmission source of the second advertising signal is the display control unit, wherein identification information for identifying the device is displayed in a second display mode different from the first display mode;
In the selection screen, when specific identification information that identifies a specific image processing apparatus that is a transmission source of the first advertising signal is selected from among the plurality of pieces of identification information, the request signal is a request signal transmitting unit that transmits a request signal to an image processing device, wherein the request signal is a signal using the predetermined information included in the first advertising signal received from the specific image processing device; The request signal is a signal for requesting execution of communication for transmitting connection information to the specific image processing device, and the connection information is a signal for requesting execution of communication for transmitting connection information to the specific image processing device, and the connection information indicates a wireless connection between the specific image processing device and the access point. the request signal transmitter, which is information for establishing the
a connection information transmitter that transmits the connection information to the specific image processing device when the request signal is transmitted to the specific image processing device;
Due to the connection information being sent to the specific image processing device, after the wireless connection is established between the specific image processing device and the access point, the second wireless interface and a target data communication unit that communicates target data related to image processing performed by the specific image processing device with the specific image processing device via the access point;
A computer program that functions as The second advertising signal includes status information of an image processing device that is a transmission source of the second advertising signal,
9. The computer program product according to claim 8, wherein on the selection screen, the identification information displayed in the second display mode is displayed in association with the status information.

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